It's partially due to hoarding, partially due to panic buying, and partially due to the lockdown of many schools and businesses, which caused most eating+drinking+related activity to move home, raising household demands on food and toilet paper above normal.
Also, if you're supposed to show your face in public as infrequently as possible, then instead of 10 shopping trips you're better off making 1 shopping trip buying 10x the stuff. Which exacerbates availability.
It's partially due to hoarding, partially due to panic buying, and partially due to the lockdown of many schools and businesses, which caused most eating+drinking+related activity to move home, raising household demands on food and toilet paper above normal.
Also, if you're supposed to show your face in public as infrequently as possible, then instead of 10 shopping trips you're better off making 1 shopping trip buying 10x the stuff. Which exacerbates availability.